1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * include/linux/kmemleak.h
4 *
5 * Copyright (C) 2008 ARM Limited
6 * Written by Catalin Marinas <catalin.marinas@arm.com>
7 */
8
9 #ifndef __KMEMLEAK_H
10 #define __KMEMLEAK_H
11
12 #include <linux/slab.h>
13 #include <linux/vmalloc.h>
14
15 #ifdef CONFIG_DEBUG_KMEMLEAK
16
17 extern void kmemleak_init(void) __init;
18 extern void kmemleak_alloc(const void *ptr, size_t size, int min_count,
19 gfp_t gfp) __ref;
20 extern void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
21 gfp_t gfp) __ref;
22 extern void kmemleak_vmalloc(const struct vm_struct *area, size_t size,
23 gfp_t gfp) __ref;
24 extern void kmemleak_free(const void *ptr) __ref;
25 extern void kmemleak_free_part(const void *ptr, size_t size) __ref;
26 extern void kmemleak_free_percpu(const void __percpu *ptr) __ref;
27 extern void kmemleak_update_trace(const void *ptr) __ref;
28 extern void kmemleak_not_leak(const void *ptr) __ref;
29 extern void kmemleak_ignore(const void *ptr) __ref;
30 extern void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp) __ref;
31 extern void kmemleak_no_scan(const void *ptr) __ref;
32 extern void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
33 gfp_t gfp) __ref;
34 extern void kmemleak_free_part_phys(phys_addr_t phys, size_t size) __ref;
35 extern void kmemleak_ignore_phys(phys_addr_t phys) __ref;
36
37 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
38 int min_count, slab_flags_t flags,
39 gfp_t gfp)
40 {
41 if (!(flags & SLAB_NOLEAKTRACE))
42 kmemleak_alloc(ptr, size, min_count, gfp);
43 }
44
45 static inline void kmemleak_free_recursive(const void *ptr, slab_flags_t flags)
46 {
47 if (!(flags & SLAB_NOLEAKTRACE))
48 kmemleak_free(ptr);
49 }
50
51 static inline void kmemleak_erase(void **ptr)
52 {
53 *ptr = NULL;
54 }
55
56 #else
57
58 static inline void kmemleak_init(void)
59 {
60 }
61 static inline void kmemleak_alloc(const void *ptr, size_t size, int min_count,
62 gfp_t gfp)
63 {
64 }
65 static inline void kmemleak_alloc_recursive(const void *ptr, size_t size,
66 int min_count, slab_flags_t flags,
67 gfp_t gfp)
68 {
69 }
70 static inline void kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
71 gfp_t gfp)
72 {
73 }
74 static inline void kmemleak_vmalloc(const struct vm_struct *area, size_t size,
75 gfp_t gfp)
76 {
77 }
78 static inline void kmemleak_free(const void *ptr)
79 {
80 }
81 static inline void kmemleak_free_part(const void *ptr, size_t size)
82 {
83 }
84 static inline void kmemleak_free_recursive(const void *ptr, slab_flags_t flags)
85 {
86 }
87 static inline void kmemleak_free_percpu(const void __percpu *ptr)
88 {
89 }
90 static inline void kmemleak_update_trace(const void *ptr)
91 {
92 }
93 static inline void kmemleak_not_leak(const void *ptr)
94 {
95 }
96 static inline void kmemleak_ignore(const void *ptr)
97 {
98 }
99 static inline void kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
100 {
101 }
102 static inline void kmemleak_erase(void **ptr)
103 {
104 }
105 static inline void kmemleak_no_scan(const void *ptr)
106 {
107 }
108 static inline void kmemleak_alloc_phys(phys_addr_t phys, size_t size,
109 gfp_t gfp)
110 {
111 }
112 static inline void kmemleak_free_part_phys(phys_addr_t phys, size_t size)
113 {
114 }
115 static inline void kmemleak_ignore_phys(phys_addr_t phys)
116 {
117 }
118
119 #endif /* CONFIG_DEBUG_KMEMLEAK */
120
121 #endif /* __KMEMLEAK_H */
122
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